.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background-color: #050505;
  color: #f5f5f5;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  backdrop-filter: blur(16px);
}

.header-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0.75rem 1.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.brand-link {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  text-decoration: none;
  color: inherit;
}

.brand-mark {
  width: 1.75rem;
  height: 1.75rem;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.4);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
  letter-spacing: 0.12em;
}

.brand-text {
  font-family: "Space Grotesk", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-weight: 600;
  font-size: 1.05rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.primary-nav {
  display: flex;
}

.nav-list {
  list-style: none;
  display: flex;
  align-items: center;
  gap: 1.75rem;
  margin: 0;
  padding: 0;
}

.nav-link {
  position: relative;
  font-family: "Poppins", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 0.9rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  text-decoration: none;
  color: rgba(245, 245, 245, 0.82);
  padding: 0.25rem 0;
}

.nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, #ffffff, #888888);
  transition: width 0.2s ease-out;
}

.nav-link:hover::after,
.nav-link:focus-visible::after {
  width: 100%;
}

.nav-link:focus-visible {
  outline: 2px solid #ffffff;
  outline-offset: 3px;
}

.nav-cta .nav-link-cta {
  padding: 0.4rem 1rem;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.5);
  background: radial-gradient(circle at 0 0, rgba(255, 255, 255, 0.16), transparent 55%);
  color: #ffffff;
}

.nav-cta .nav-link-cta:hover {
  background-color: #ffffff;
  color: #050505;
}

.nav-cta .nav-link-cta:focus-visible {
  outline: 2px solid #ffffff;
  outline-offset: 2px;
}

.nav-toggle {
  display: none;
  position: relative;
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.45);
  background: rgba(5, 5, 5, 0.9);
  padding: 0;
  align-items: center;
  justify-content: center;
  cursor: pointer;
}

.nav-toggle:focus-visible {
  outline: 2px solid #ffffff;
  outline-offset: 3px;
}

.nav-toggle-bar {
  position: relative;
  width: 1.1rem;
  height: 2px;
  border-radius: 999px;
  background-color: #f5f5f5;
  display: block;
  transition: transform 0.18s ease-out, opacity 0.18s ease-out, top 0.18s ease-out, bottom 0.18s ease-out;
}

.nav-toggle-bar:nth-child(1) {
  top: -4px;
}

.nav-toggle-bar:nth-child(3) {
  bottom: -4px;
}

.nav-toggle.is-active .nav-toggle-bar:nth-child(1) {
  top: 0;
  transform: rotate(45deg);
}

.nav-toggle.is-active .nav-toggle-bar:nth-child(2) {
  opacity: 0;
}

.nav-toggle.is-active .nav-toggle-bar:nth-child(3) {
  bottom: 0;
  transform: rotate(-45deg);
}

.nav-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(4px);
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.18s ease-out, visibility 0.18s ease-out;
  z-index: 900;
}

.nav-overlay.is-active {
  opacity: 1;
  visibility: visible;
}

@media (max-width: 768px) {
  .header-inner {
    padding-inline: 1rem;
  }

  .primary-nav {
    position: fixed;
    inset-block-start: 0;
    inset-inline-end: 0;
    height: 100vh;
    width: min(80vw, 320px);
    background-color: #050505;
    border-left: 1px solid rgba(255, 255, 255, 0.08);
    box-shadow: -20px 0 40px rgba(0, 0, 0, 0.8);
    transform: translateX(100%);
    visibility: hidden;
    pointer-events: none;
    transition: transform 0.2s ease-out, visibility 0.2s ease-out;
    padding-top: 4.25rem;
    padding-inline: 1.75rem;
    display: flex;
  }

  .primary-nav.is-open {
    transform: translateX(0);
    visibility: visible;
    pointer-events: auto;
  }

  .nav-list {
    flex-direction: column;
    align-items: flex-start;
    gap: 1.2rem;
    width: 100%;
  }

  .nav-cta {
    margin-top: 0.8rem;
  }

  .nav-cta .nav-link-cta {
    display: inline-flex;
    width: 100%;
    justify-content: center;
  }

  .nav-toggle {
    display: inline-flex;
    flex-direction: column;
  }
}

@media (prefers-reduced-motion: reduce) {
  .nav-link::after,
  .nav-toggle-bar,
  .primary-nav,
  .nav-overlay {
    transition: none !important;
  }
}

@media (min-width: 769px) {
  .primary-nav {
    visibility: visible;
    pointer-events: auto;
  }
}